[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 051726
TWDAT

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
205 PM EDT MON APR 05 2010

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS
OF SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST
FROM THE EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED
ON SATELLITE IMAGERY...METEOROLOGICAL ANALYSIS...WEATHER
OBSERVATIONS...AND RADAR.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 1645 UTC...

...THE ITCZ...

FROM THE SIERRA LEONE COAST NEAR 6N10W TO 4N20W 2N30W 1N40W...
CROSSING THE EQUATOR ALONG 49W...INTO NORTHEASTERN BRAZIL NEAR
1S50W. SCATTERED STRONG SHOWERS AND THUNDERSTORMS WITHIN 60 NM
TO 90 NM ON EITHER SIDE OF 4N11W 4N16W 3N18W 3N24W....AND FROM
THE EQUATOR TO 2N BETWEEN 48W AND 51W. ISOLATED MODERATE SHOWERS
AND POSSIBLE THUNDERSTORMS ARE ELSEWHERE TO THE SOUTH OF 7N.

...DISCUSSION...

THE GULF OF MEXICO...
UPPER LEVEL MOISTURE IS MOVING AROUND A TROUGH THAT IS ALONG
25N93W 21N92W. THE MOISTURE COVERS THE AREA TO THE SOUTH OF
26N BETWEEN THE YUCATAN CHANNEL INTO THE SOUTHWESTERN CORNER
OF THE GULF OF MEXICO. BROAD SURFACE ANTICYCLONIC FLOW COVERS
THE AREA...AROUND A RIDGE THAT EXTENDS FROM A 1025 MB HIGH
PRESSURE CENTER THAT IS NEAR 32N74W TO SOUTHEASTERN ALABAMA...
TO SOUTHWESTERN LOUISIANA...TO THE MIDDLE TEXAS COAST.

THE CARIBBEAN SEA...
MIDDLE LEVEL TO UPPER LEVEL CYCLONIC FLOW MOVES AROUND A TROUGH
THAT EXTENDS FROM 27N76W THAT IS JUST TO THE NORTH OF THE
BAHAMAS...ACROSS CUBA INTO THE CARIBBEAN SEA NEAR 14N80W.
UPPER LEVEL SOUTHWESTERLY WIND FLOW MOVES FROM THE SOUTHWESTERN
CORNER OF THE AREA...TO THE SOUTHEAST OF THE TROUGH...EXITING
THE CARIBBEAN SEA EVERYWHERE TO THE EAST OF THE WINDWARD
PASSAGE. SHOWERS ARE POSSIBLE WITHIN 60 NM TO 90 NM ON EITHER
SIDE OF THE LINE FROM SOUTHWESTERN HAITI TO 16N80W TO THE EAST
CENTRAL COAST OF NICARAGUA. BROKEN LOW CLOUDS AND POSSIBLE
SHOWERS ALSO ARE TO THE NORTH OF 17N BETWEEN 60W AND 70W...
INCLUDING THE EASTERN DOMINICAN REPUBLIC...PUERTO RICO...AND
THE VIRGIN ISLANDS.

THE ATLANTIC OCEAN...
AN UPPER LEVEL RIDGE PASSES THROUGH 32N32W TO 28N30W 22N32W
12N36W. MIDDLE LEVEL TO UPPER LEVEL CYCLONIC FLOW COVERS THE
AREA FROM THE 32N32W 12N36W RIDGE TO 70W. A TROUGH GOES FROM
A 32N49W CYCLONIC CIRCULATION CENTER TO 26N53W TO 26N62W AND
24N64W. THE TROUGH SUPPORTS THE COLD FRONT THAT PASSES THROUGH
32N38W TO 25N43W TO 20N47W. A DISSIPATING COLD FRONT CONTINUES
FROM 20N47W TO 14N60W. A POST-FRONTAL TROUGH EXTENDS FROM
A 1006 MB LOW PRESSURE CENTER THAT IS NEAR 32N48W TO 32N45W...
THROUGH 30N46W TO 26N50W CURVING TO 27N56W. SHOWERS AND
THUNDERSTORMS ARE WITHIN 30 NM TO 60 NM ON EITHER SIDE OF THE
COLD FRONT TO THE NORTH OF 21N...AND TO THE NORTH OF 29N BETWEEN
43W AND 51W. BROAD SURFACE ANTICYCLONIC FLOW IS TO THE WEST OF
THE FRONT...TO THE NORTH OF 19N TO THE WEST OF 58W...AROUND
A 1025 MB HIGH PRESSURE CENTER THAT IS NEAR 32N74W. SURFACE
ANTICYCLONIC FLOW IS TO THE EAST OF THE FRONT...MOVING AROUND
A RIDGE THAT PASSES THROUGH 32N23W TO 26N28W TO 19N36W 12N50W.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
MT




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